<div class="row">
    <div class="col col-50">
        <button class="button button-block button-share" ng-click="share = !share || backTop()">
            发送给好友
        </button>
    </div>
    <div class="col">
        <button class="button button-block button-share" ng-click="share =!share || backTop()">
            分享到朋友圈
        </button>
    </div>
</div>

<div class="weiba-layer-sharehelper weiba-masklayer black" ng-show="!share" ng-click="share = !share"></div>
